bated



(No Model.)

S. M. BAIRD. LIPTING JACK.

' Patented July 19,1881.

Ssmmfd l INVENTOR.

ATTORNEY.

UNITED STrrIEs PATENT OFFICE.

SELAH M. BAIRD, OF HOLLY, MICHIGA7 ASSIGNOB OF ONE-HALF TO JOHN M. BAIRD, VOF SAME PLAGE.

LlFTlNe-JACK.

SPECIFICATION forming' part of Letters Patent No. 244,521, dated J'Iily 19, 1881.

Application filed April 15, 17881. (N o model.)

To all whom it may conce-rn:

Be it known that I, SELAH M. BAIRD, a citif zen' of the United States, residing at'Holly,'in the county of Oakland and State of Michigan,

have invented a new and useful Lifting-Machine and Wagon Jack Combined, of which the following is a specification.

This invention has relation to improvements in lifting-jacks; and it consists in the construction and novel arrangement of the severa-l parts hereinafter more fully described.

In the accompanyingdrawings,Figure l represents a perspective viewof my improved lifting-jack. Fig. 2 represents a front view of the same, and Fig. 3 represents a rear view.

A designates the base of the jack, to which is secured and arising therefrom a post or standard, B, the upper end -of which is provided with a slot, b, and the lower portion thereof has secured` thereto the upper ends of brace-bars b, while the lower ends of vsaid bars are secured to the base A. Said standard B is further provided on itslace and near the lower portion with a horizontal bar, (1,.the neck or stem c of which is screwed o1' driven in said standard, and is provided with a vertical slot c, and at the rear with a spring-catch or hook, D, projecting obliq'uely therefrom.

E represents the operating-lever, the forward end of which is pivoted t0 a verticalbar, e, and havin gits fulcrum in the vertical slot b, as at e. Said bar e has attached loosely thereto a projecting arm, F, in the inner end of vwhich is formed a slot, f, through which passesl the bar e.

Gr indicates a stationary bar, the upper end of which is secured'to the top of the standard B and the lower end to the base A. Said bar placed under the weight to be raised, when the operating-lever E is brought downward so as to elevate the weight to the required height, or it may be elevated so that the lever E may be held in position by the spring latch D. Should it become necessary to give the lever a second stroke, the arm g is raised sufficiently to come in contact with the object thus held by the arm F, after'which the spring-catch is released from engagement with the lever and the handle raised, thereby lowering the bar c and permitting the projecting arm F to be raised somewhat higher than its former position, (at the same time the weight is supported upon the arm 9,) after which the lever is given the second stroke, thereby raising the weight and releasing the same from the army and leaving the weight resting on and supported by the arm F. `At the same time the lever is caught and held by the spring-catch.

It will thus be observed by the foregoing description that I construct a liftingjack the projecting arms F g of which, being adjustable, can be worked alternately in giving the lever one or more strokes. At the same time it is simple in construction, durable, and easily operated. Y

Having described this invention, what I claim, and desire to securevby Letters Patent, 1s

1. 1n a lifting-jack, the rigid bar G, provided with the resting-bar g, substantially as shown andfdescribethand for the purposes set forth.

2. The bar Gr, providedwith the sliding arm g, incombination with the harp, armF, lever lsELAH M. BAIRD.

Witnesses J M; M. BAIRD, S. S. WILHELM. 

